First, control the density.

To breed koi fish, the density should be controlled first. It is wrong to raise too many koi fish in small fish tanks, which will lead to their poor growth. Generally speaking, if the size of a fish tank is 6 * 3 * 15cm, the number of koi fish that can be cultured is about 6, but not too much.

Second, change water regularly.

It is also important to maintain the water quality suitable for breeding koi fish. Therefore, it is necessary to change the water regularly and clean up the impurities in the fish tank, so as to provide a clean environment for the growth of koi fish. Specifically, the frequency of water change can be controlled in 3-7 days, and it needs to be changed more frequently in summer, and the interval in winter can be slightly longer. You can change one-third of the water every time. In order to ensure that the water temperature does not change dramatically, it is necessary to control the flow rate of water and slowly inject new water.

Third, reasonable feeding.

Another very important problem is feeding, which requires normal feeding methods. First of all, we should choose good food. Koi fish is omnivorous. Try not to use only one kind of food, which may lead to insufficient nutrition. You can combine plant food with animal food, such as vegetables, earthworms, red worms and so on. You can feed it once or twice a day, once in the morning and once in the afternoon.

Fourth, proper lighting.

It is necessary to provide a certain amount of light every day when breeding koi fish. Especially if there are other plants in the fish tank, it is necessary to provide them with light for photosynthesis. However, considering the strong light in summer, it can be shaded appropriately.

Verb (abbreviation of verb) matters needing attention

In winter, special treatment can be carried out to let koi fish overwinter and put it in a pool with a water temperature of 5- 1 degree. At this time, the feeding frequency should not be too much, and it can be fed once every 3-5 days.